7. Diablo Raven Wallpaper by Graham and Brown. Created by famed designer Barbara Hulanicki, Diablo is a dark design which is sure to fascinate on the walls of any home. The design is linked to another of Barbara’s, Maleficent, with this piece featuring the wicked Disney villain’s pet raven, Diablo. The motif is beautifully illustrated and, along with the black colour of the design, helps to give the piece a brooding darkness with a definite sense of mood.